Crazy Aaron's Thinking Putty website [puttyworld.com]
has 20% off and free shipping with code: cyberfunday.
I love Crazy Aaron's, and I don't see it go on sale much. Well worth it. Most putty tins normally run $10 to $15, on sale $8 to $12, but it's a large blob. (Pay attention to the size. Some tins are smaller.)
Someone is going to want to suggest that you go to dollar tree and buy a bunch of generic silly putty. These people do not know Crazy Aaron's. Very cool stuff. Great to have in your desk.
I imagine this is just for today.